At the beginning of each player's upkeep, Power Surge deals X damage to that player, where X is the number of untapped lands they controlled at the beginning of this turn.
NM-Mint - $1.30
Lightly Played - $1.20
Moderately Played - $1.20
Heavily Played - $1.00
Damaged - $0.90
NM-Mint Non English - $1.30
Lightly Played Non English - $1.20
Moderately Played Non English - $1.20
Heavily Played Non English - $1.00
Damaged Non English - $0.90